VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Arthur J. Gallagher & Co. vs Euronext N.V.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

Arthur J. Gallagher & Co.

AJG · New York Stock Exchange

Market cap (USD)$67.9B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorFinancials
IndustryInsurance - Brokers
CountryUS
Data as of2026-01-09
Moat score
69/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Arthur J. Gallagher & Co.'s moat claims, evidence, and risks.

View AJG analysis

Euronext N.V.

ENX · Euronext Paris

Market cap (USD)$12.4B
Gross margin (TTM)58.9%
Operating margin (TTM)51.2%
Net margin (TTM)36.2%
SectorFinancials
IndustryFinancial - Data & Stock Exchanges
CountryNL
Data as of2026-01-03
Moat score
74/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Euronext N.V.'s moat claims, evidence, and risks.

View ENX analysis

Comparison highlights

  • Moat score gap: Euronext N.V. leads (74 / 100 vs 69 / 100 for Arthur J. Gallagher & Co.).
  • Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); Euronext N.V. has 7 segments (34.4% in Trading).
  • Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; Euronext N.V. has 7 across 4.

Primary market context

Arthur J. Gallagher & Co.

Brokerage

Market

Insurance and reinsurance brokerage and consulting

Geography

Global

Customer

Commercial, industrial, public sector, nonprofit and other organizations; underwriting enterprises for reinsurance placements

Role

Intermediary / broker / advisor

Revenue share

86%

Euronext N.V.

Trading

Market

Multi-asset exchange trading venues (cash equities, derivatives, fixed income, FX, power)

Geography

Europe (with global participants)

Customer

Broker-dealers, banks, proprietary trading firms, asset managers, and other market participants

Role

Trading venue operator

Revenue share

34.4%

Side-by-side metrics

Arthur J. Gallagher & Co.
Euronext N.V.
Ticker / Exchange
AJG - New York Stock Exchange
ENX - Euronext Paris
Market cap (USD)
$67.9B
$12.4B
Gross margin (TTM)
n/a
58.9%
Operating margin (TTM)
n/a
51.2%
Net margin (TTM)
n/a
36.2%
Sector
Financials
Financials
Industry
Insurance - Brokers
Financial - Data & Stock Exchanges
HQ country
US
NL
Primary segment
Brokerage
Trading
Market structure
Oligopoly
Oligopoly
Market share
n/a
64.8% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
69 / 100
74 / 100
Moat domains
Supply, Demand
Legal, Network, Supply, Demand
Last update
2026-01-09
2026-01-03

Moat coverage

Shared moat types

Data Workflow LockinOperational Excellence

Arthur J. Gallagher & Co. strengths

Service Field NetworkBrand Trust

Euronext N.V. strengths

Concession LicenseTwo Sided NetworkIP Choke PointFormat Lock InClearing Settlement

Segment mix

Arthur J. Gallagher & Co. segments

Full profile >

Brokerage

Oligopoly

86%

Risk Management

Competitive

14%

Euronext N.V. segments

Full profile >

Listing

Oligopoly

14.3%

Trading

Oligopoly

34.4%

Advanced Data Services

Quasi-Monopoly

14.9%

Clearing

Oligopoly

12.4%

Custody & Settlement

Quasi-Monopoly

16.6%

Technology Solutions & Other

Competitive

6.5%

Investor Services

Competitive

0.9%

Want the full wide moat stocks list?

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.